<!DOCTYPE html>
<html lang="zh">

<head>
  <meta charset="utf-8">
  <title>围棋</title>
  <style>
    body{
      /* background-color:red; */
    }
    canvas{
      /* background-color:white; */
    }
  </style>
</head>

<body>
  <canvas id="C" width="800" height="600"></canvas>
  <script src="main.js"></script>
</body>

</html>